Factor XII Assay

Light Blue Top Tube

Tube Type

Test ID LAB310
CPT Code(s) 85280
Group/Individual Test Individual
Laboratory Core Laboartory
Tube Station 30 Routine: 888 STAT
Specimen Routine: 2.7 mL Blood/Light Blue Top Tube; See Important Comments
Pediatric: 1.8 mL Blood Pediatric Light Blue Top Tube
Unspun: 4 hours
Room temperature: 4 hours
Refrigerator: NO
Frozen: 14 days (platelet poor plasma only)
Availability Routine: Performed Mondays and Thursdays
Turnaround Time Stat 90 minutes; Routine 3-4 days
Reference Range Normal: 54-162% of Normal
Critical: <10% of Normal
Comments Deliver Immediately: If more than 2 Factor Assays are ordered: 2 Light Blue Top Tubes need to be drawn. Draw tube must be allowed to fill completely. Short draws will be rejected.

Reviewed by Christopher Parker on November 11, 2021

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514